[X86] Merge the Has3DNow0F0FOpcode TSFlag into the OpMap encoding. NFC

The 3DNow instructions are encoded a little weird, but we can still represent it as an opcode map.

llvm-svn: 328410
diff --git a/llvm/utils/TableGen/X86RecognizableInstr.h b/llvm/utils/TableGen/X86RecognizableInstr.h
index 0959704..36579d0 100644
--- a/llvm/utils/TableGen/X86RecognizableInstr.h
+++ b/llvm/utils/TableGen/X86RecognizableInstr.h
@@ -122,7 +122,7 @@
   };
 
   enum {
-    OB = 0, TB = 1, T8 = 2, TA = 3, XOP8 = 4, XOP9 = 5, XOPA = 6
+    OB = 0, TB = 1, T8 = 2, TA = 3, XOP8 = 4, XOP9 = 5, XOPA = 6, ThreeDNow = 7
   };
 
   enum {
@@ -191,8 +191,6 @@
   bool HasEVEX_KZ;
   /// The hasEVEX_B field from the record
   bool HasEVEX_B;
-  /// The has3DNow0F0FOpcode field from the record
-  bool Has3DNow0F0FOpcode;
   /// Indicates that the instruction uses the L and L' fields for RC.
   bool EncodeRC;
   /// The isCodeGenOnly field from the record